Helly Hansen is one of the most influenced outdoor clothing companies. They specify mostly on winter/rain jackets. Helly Tech is the outer layer between you and the elements. This technology provides the outstanding protection from the elements. Helly Hansen is worn and trusted by more then 30,000 professional sailors. Its outer layer will keep water molecules out, while allowing sweat vapor to pass through. This will keep you dry and comfortable. The outer layer is a combination of a durable water repellent (DWR) fabric and the inner layer is a highly breathable fabric. The outer robust membrane keeps water out. The outer layer also protects you from strong winds and cold temperature, and it keeps sweat vapor from escaping.

This relates to engineering because they had to figure out how to put the layers together.